Are the files stored on a shared network/drive? if yes please try to download the file to your computer locally and then tru to open it and check. Also have you tried to add the file and the folder path to the whitelist of Adobe Acrobat .
Are the files stored on a shared network/drive? if yes please try to download the file to your computer locally and then tru to open it and check. Also have you tried to add the file and the folder path to the whitelist of Adobe Acrobat .